Compound containing an anthranilic acid blocking group

Abstract

The invention relates to a novel kind of anthranilic acid compound that releases a UG as a function of chemical bond cleavage according to Formula (I): Q-(AAS)-UG where UG is an useful group and is chemically bonded to (AAS); (AAS) is an anthranilic acid switching group; and Q is a group in which the bond to (AAS) is broken so that the -(AAS)-UG fragment subsequently decomposes to the free UG. In one embodiment this invention relates to a multilayer silver halide photographic element comprising a support bearing a cyan dye image-forming unit comprised of at least one red-sensitive silver halide emulsion layer having associated therewith at least one cyan dye-forming coupler, a magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith at least one magenta dye-forming coupler, and a yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith at least one yellow dye-forming coupler, wherein at least one layer additionally contains an anthranilic acid compound according to Formula (II): G-(TG1) q -(AATG)-(TG2) p -PUG where G is a group in which the bond to the timing group is cleaved upon reaction with oxidized developer; TG1 and TG2 represent any known timing or switching group and may be the same or different; q and p are independently 0 or 1; AATG represents an anthranilic acid timing group and PUG is a photographically useful group.

1. A silver halide photographic element comprising a support, at least one light-sensitive silver halide emulsion layer, and an anthranilic acid compound according to Formula (II):
   G-(TG1) q -(AATG)-(TG2) p -PUG 
 
       where G is a group in which the bond to the timing group is cleaved upon reaction with oxidized developer; TG1 and TG2 represent any known timing or switching group and may be the same or different; q and p are independently 0 or 1; AATG represents an anthranilic acid timing group and PUG is a photographically useful group. 
     
     
       2. The photographic element of  claim 1  wherein G is a moiety that reacts with oxidized developer by a coupling reaction to form a stable or unstable dye. 
     
     
       3. The photographic element of  claim 1  wherein q and p are both 0. 
     
     
       4. The photographic element of  claim 1  wherein the PUG is either an inhibitor of silver development or an electron transfer agent. 
     
     
       5. The photographic element of  claim 1  wherein the anthranilic acid compound is according to either Formula (IIa) or (IIb): 
       
         
           
           
               
               
           
         
       
       wherein:
 A is a group in which the bond to oxygen is cleaved upon reaction with oxidized developer; 
 X is an optional substituent; 
 N is 0 to 4; 
 R1 is an alkyl, aryl or heterocychic group with the provisio that R1 may be connected with X or the phenyl ring to form an additional ring system; and PUG is a photographically useful group. 
 
     
     
       6. The photographic element of  claim 5  wherein A is a moiety that reacts with oxidized developer by a coupling reaction to form a stable or unstable dye. 
     
     
       7. The photographic element of  claim 6  wherein n is zero and R 1  is an alkyl group. 
     
     
       8. The photographic element of  claim 5  wherein the PUG is an inhibitor of silver development. 
     
     
       9. The photographic element of  claim 8  where the inhibitor is a benzotriazole. 
     
     
       10. The photographic element of  claim 5  where the PUG is an electron transfer agent. 
     
     
       11. The photographic element of  claim 10  wherein the electron transfer agent is a 1-aryl-3-pyrazolidinone. 
     
     
       12. The photographic element of  claim 7  wherein A is a napthol coupler. 
     
     
       13. The photographic element of  claim 7  wherein A is an acetoanilide coupler. 
     
     
       14. The photographic element of  claim 5  wherein the anthranilic acid compound is according to Formula (IIa). 
     
     
       15. The photographic element of  claim 14  wherein A is a moiety that reacts with oxidized developer by a coupling reaction to form a stable or unstable dye. 
     
     
       16. The photographic element of  claim 15  wherein n is zero and R 1  is an alkyl group. 
     
     
       17. The photographic element of  claim 14  wherein the PUG is an inhibitor of silver development or an electron transfer agent. 
     
     
       18. The photographic element of  claim 17  wherein PUG is an inhibitor of silver and the inhibitor is a benzotriazole. 
     
     
       19. The photographic element of  claim 17  wherein PUG is an electron transfer agent and the electron transfer agent is a 1-aryl-3-pyrazolidinone. 
     
     
       20. The photographic element of  claim 16  wherein A is a napthol coupler. 
     
     
       21. The photographic element of  claim 16  wherein A is an acetoanilide coupler.